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/*
* PathfindingRules.h, part of VCMI engine
*
* Authors: listed in file AUTHORS in main folder
*
* License: GNU General Public License v2.0 or later
* Full text of license available in license.txt file, in main folder
*
*/
#pragma once
VCMI_LIB_NAMESPACE_BEGIN
struct CDestinationNodeInfo;
struct PathNodeInfo;
class CPathfinderHelper;
class PathfinderConfig;
class IPathfindingRule
{
public:
virtual ~IPathfindingRule() = default;
virtual void process(
const PathNodeInfo & source,
CDestinationNodeInfo & destination,
const PathfinderConfig * pathfinderConfig,
CPathfinderHelper * pathfinderHelper) const = 0;
};
class DLL_LINKAGE MovementCostRule : public IPathfindingRule
{
public:
void process(
const PathNodeInfo & source,
CDestinationNodeInfo & destination,
const PathfinderConfig * pathfinderConfig,
CPathfinderHelper * pathfinderHelper) const override;
};
class DLL_LINKAGE LayerTransitionRule : public IPathfindingRule
{
public:
void process(
const PathNodeInfo & source,
CDestinationNodeInfo & destination,
const PathfinderConfig * pathfinderConfig,
CPathfinderHelper * pathfinderHelper) const override;
};
class DLL_LINKAGE DestinationActionRule : public IPathfindingRule
{
public:
void process(
const PathNodeInfo & source,
CDestinationNodeInfo & destination,
const PathfinderConfig * pathfinderConfig,
CPathfinderHelper * pathfinderHelper) const override;
};
class DLL_LINKAGE PathfinderBlockingRule : public IPathfindingRule
{
public:
void process(
const PathNodeInfo & source,
CDestinationNodeInfo & destination,
const PathfinderConfig * pathfinderConfig,
CPathfinderHelper * pathfinderHelper) const override;
protected:
enum class BlockingReason
{
NONE = 0,
SOURCE_GUARDED = 1,
DESTINATION_GUARDED = 2,
SOURCE_BLOCKED = 3,
DESTINATION_BLOCKED = 4,
DESTINATION_BLOCKVIS = 5,
DESTINATION_VISIT = 6
};
virtual BlockingReason getBlockingReason(
const PathNodeInfo & source,
const CDestinationNodeInfo & destination,
const PathfinderConfig * pathfinderConfig,
const CPathfinderHelper * pathfinderHelper) const = 0;
};
class DLL_LINKAGE MovementAfterDestinationRule : public PathfinderBlockingRule
{
public:
void process(
const PathNodeInfo & source,
CDestinationNodeInfo & destination,
const PathfinderConfig * pathfinderConfig,
CPathfinderHelper * pathfinderHelper) const override;
protected:
BlockingReason getBlockingReason(
const PathNodeInfo & source,
const CDestinationNodeInfo & destination,
const PathfinderConfig * pathfinderConfig,
const CPathfinderHelper * pathfinderHelper) const override;
};
class DLL_LINKAGE MovementToDestinationRule : public PathfinderBlockingRule
{
protected:
BlockingReason getBlockingReason(
const PathNodeInfo & source,
const CDestinationNodeInfo & destination,
const PathfinderConfig * pathfinderConfig,
const CPathfinderHelper * pathfinderHelper) const override;
};
VCMI_LIB_NAMESPACE_END
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